A sharp cline may indicate
A) a sudden increase in the mutation rate.
B) a population bottleneck.
C) a geographical obstacle,such as a mountain.
D) nonrandom mating.
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Q2: Many alleles cause phenylketonuria (PKU).A unique mutation
Q3: The collection of deleterious alleles in a
Q4: In an endogamous community,
A)many people marry people
Q5: The prevalence of a Y chromosome with
Q6: _ maintains deleterious alleles in a population.
A)Mutation
B)Migration
C)Random
Q8: In human populations,inbreeding results in
A)fewer heterozygotes and
Q9: Clines are created when
A)emigrants remove alleles and
Q10: A founder effect occurs when
A)geographic barriers separate
Q11: Consanguineous marriages are between men and women
Q12: In the science fiction film,When Worlds Collide,100
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